JPS6246599Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a retractable headlamp for an automobile, and more particularly to a braking device for alleviating impact noise when the lamp body is opened/closed and stopped.

In a conventional retractable headlamp as shown in FIG. 1, a brake spring 2 is used to reduce the impact noise generated when the lamp body 1 stops opening and closing. That is, although the lamp body 1 supported at the rotation fulcrum A is controlled to open and close by the forward/reverse drive motor 3 via the worm gear mechanism 4, the lamp body 1 in this open/close position is controlled by a stopper 5A provided on the vehicle body, for example. ,5
Blocked by B. For this reason, in conventional braking devices, a braking spring 2 that acts in the opposite direction to the driving direction of the drive motor 3 is strung around to decelerate the lamp 1 as it heads toward the stop position. (Refer to 1983-73235). However, in the illustrated configuration, the light body 1 moving toward the closed position shown by the imaginary line is certainly braked by the compressed brake spring 2, but when the light body 1 moves toward the open position (shown by the solid line) In this case, the lamp body 1 is accelerated by the initial load of the brake spring 2, and the impact noise caused by the stopper 5A becomes louder.

In view of the problems of conventional braking devices for retractable headlights as described above, the present invention aims to provide a braking device that can brake the lamp body in both the opening and closing directions. In a braking device for a retractable headlamp, in which a braking spring is provided between the light body and the vehicle body, the braking spring is stored in energy by the opening/closing movement of the light body, and the position of the attachment point of the brake spring with respect to the light body when fully opened and fully closed. Connect the brake spring to the lamp body so that the brake spring is located on the opposite side of the straight line connecting the rotation fulcrum of the lamp body and the fixed point of the brake spring,
It is proposed to store energy in the brake spring at the latter stage of the opening/closing movement of the lamp body after the brake spring crosses the straight line.

Hereinafter, details of an embodiment of the present invention will be explained with reference to FIG.

FIG. 2 is a sectional view corresponding to FIG. 1 of a retractable headlamp according to the present invention, and the same reference numerals are given to the same structural parts as in FIG. 1. The feature of the present invention is the way the brake spring 2 is attached to the lamp body 1, and the attachment point B of the brake spring 2 to the lamp body 1 is
is a position with a locus β that crosses the straight line α connecting the rotation fulcrum A and the fixed point C of the brake spring 2 when the lamp body 1 rotates, that is, the position when the lamp body 1 is fully closed and fully open is the above straight line. It is chosen to be on the opposite side of α.

Since the braking device for the retractable headlamp according to the present invention has the above structure, the lamp body 1
When the light body 1 is driven from the open position shown by the solid line toward the closed position shown by the imaginary line, at the beginning of its operation, the lamp body 1 is accelerated by the rotational moment M by the brake spring 2, and at the later stage of its operation, In this case, the force of the brake spring 2 acts in the opposite direction, and the lamp body 1 is braked.

Further, when the lamp body 1 is driven from the closed position to the open position, the lamp body 1 has a rotational moment M.
Receives a rotational moment opposite to that from braking spring 2,
Next, near the open position, the force of the braking spring 2 is reversed as a rotational moment M, so that a braking force is applied to the lamp body 1. As a result, according to the present invention, the impact noise caused by the stoppers 5A and 5B can be alleviated in both the opening and closing directions, and an improvement in quality can be expected.

In the end, according to the present invention, not only can impact noise in both directions be alleviated with a single brake spring, but also the force of the brake spring acts in the direction of accelerating the lamp at the initial stage of operation, allowing light movement of the lamp. You can also get

In the above embodiment, a braking spring made of a tension spring was illustrated, but if the fixed point C in FIG. The same objective can be achieved by interposing a brake spring consisting of.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a conventional retractable headlamp, and FIG. 2 is a sectional view corresponding to FIG. 1 of a retractable headlamp according to the present invention. 1... Lamp body, 2... Brake spring, A... Rotation fulcrum (of the light body), B... Mounting point (of the brake spring), C
...Fixed point (of the brake spring), α...straight line.

Claims (1)

[Scope of utility model registration request] In a braking device for a retractable headlamp, in which a braking spring is provided between a light body whose opening and closing is controlled and a vehicle body, and which stores energy by the opening and closing movement of the light body, the braking spring is attached to the light body when fully opened and when fully closed. The brake spring is connected to the lamp body so that the point is located on the opposite side of the straight line connecting the rotation fulcrum of the lamp body and the fixed point of the brake spring, and the position of the lamp body after the brake spring crosses the straight line is A braking device for a retractable headlamp characterized by storing energy in a braking spring during the latter stages of opening/closing motion.